Great job as always, Steve.
Part of WBAP's history is indeed written already...1922-48...as part of Richard Schroeder's master's thesis on file at UTA's Special Collections dept in the main library. (Wish it were online, but it's not.) Schroeder is the Greenville TX-based radio/TV historian who wrote the wonderful book, "Texas Signs On." From 1948-on, his thesis mostly covers WBAP-TV. Even tracking the last 60 years of WBAP-AM would be a chore. Frank Mills, Jim Byron and so many others who kept the radio side going in those days are long dead. At least Bill Mack, Don Harris and others are still around who could tell the 1970-on story, beginning especially with the end of the timeshare agreement with WFAA-AM.
Meanwhile, I've got tribute sites set up for KBOX, KDNT and a couple more. Jack Schell is working on one for KVIL, and so is someone else independently of Jack, IIRC. And John Lewis does a wonderful site about KXOL.
I think KFJZ would be a great one to do, also...with its roots transcending even KDKA, going back to 1917. Someone did try an audio history of KFJZ; I believe it's in three parts, and it was being sold on the web just a few years back. Still, a lot of territory to cover.